Signaling system.



0. HUGE. SIGNALING SYSTEM.

APPLIOATIOK FILED SBP'LZ, 1909. V

Patented Feb. 20, 1912.

30 4, for connectin UNITED STATES PATENT OFFICE.

WY 0. HUGE, OF SAND WICE, ILLINOIS, ASSIGNOR '10 SANDWICH ELECTRIC COM- PANY, OF SANDWICH, ILLINOIS, A CORPORATION F'ILLINOIS.-

SIGNALING SYSTEM.

Specification of Letters Patent.

Patented Feb. 20, 1912.

Application filed September 2,1909. Serial No. 515,955.

To all whom it may concern:

Be it known that I, HARRY O. HUGH, a 'citizen of the United States, residing 'at Sandwich, in the; county of Dekalb and State of Illinois, have invented a certain,

ings, forming apart of this specification.

This invention relates to signaling systerns, and has for itsobject the provision of an improved arrangement for a signalin system, wherein it is possible to pr vi e a plurality of signal-receiving stations having selective s gnal-receiving de= vices, from which signaling circuit it is possible to operate a plurality of branch circuits, all of which is of great utility in connection with railway telephone and telegraph apparatus, as will appear from the escription of my invention which follows, in connection w th the accompanying drawmg lllustratin the preferred embodlment thereof. In t is illustration I show two line wires 1 and 2, for uniting a central station A with substations B, C, D, and which line circuit 12' is provided with a branch circuit having line conductors 3 and a plurality of similar stations E, E. I ave shown at all the sub stations a step-by-step segment 5, as controlled by a magnet 6, for stepping up purposes, and releasable by a magnet7. When 85'the segment'5 is properly stepped up, its

arm 8 engages the cont-actspring 9 to close circuit through a relay-10, thereby to re lease a slow-moving element 11, and when the circuit has been established a sutlicient length of time, the slow moving element closes circuit through -a battery 12, and a local si nal 13. The relays 6 and '7 are operated by a polar relay 14, bridged across the line wires 1 and 2, impulses of one polarity actuating its armature to close cir- Each substation is provided with telephonic receiving devices indicated by the receiver 17. At the central station there is provided likewise a telephone set typified by the receiver 18 and a key 19, adapted to send currents of one polarity from the bat tery 20 toactuate the relay 14, thereby to operate the relay 6. A second key 21 operates its relay 22 to reverse the polarity of the battery 20, and thus sends impulses of opposite polarity over line wires 1 and 2,.

to thereby actuate relay 7. The contact armsv 8 of the various substations B, C, and

D are disposed angularly, so thateach station responds to unlike indications sent out from the central station. On the branch circuit 3, {1, I have indicated a pluralityof stations E, in each of which the selector apparatus is the. same as for the other stations, except that preferably'all of the:-

arms 8 of said stations on the branch circuit have the same angular position, so that all of these stations may be called in unison. This is of advantage when such stations as B, C and D are the main line stat-ions of a railroad system and a little branch line runs off the main line at some intermediate .point, whichmay have one, two or more substations, but all of which respond to the same indication at the central station. this manner, the system is not loaded with a multiplicity of separate and distinct calls. To connect the branch line 3, 4, with the main line 1, 2, 'for talking purposes, I provide a repeating coil 23, as shown. To relay orv transfer the battery impulses from the main line to the branch, I provide a relay 24, whose armature and front contact 2:)

relay the impulses to the branch 3, 4, through theagemry ofa separate local battery 20. Back contact 29 through the agency of the lmttery 28 relays the inn'mlses of opposite polarity. Thus'the sigl inls, as sent out by the central station I have t-ransi'terred to the branch, and talking service can likewise be maintained. Condensers 27 are used to prevent undue deflection of these battery impulsesby the repeating coil away from the relay 24.

I larly described the I do not claim herein the use of a olarized relay for relaying current of hot polarities from one circuit to another as such use of a olarized relay is well known in the art and shown for instance in the. atent to D Infreville, 281,249, issued JuFy 17, 1883.

While I have herein shown and particureferred embodiment of my invention, I 0 not limit myself to .the precise constructionand arrangement as hereifi set forth but Having thus. -described my I. invention, what I claim and desire to secure by Letters Patent isi 1. A selective signaling s stem comprising a central station and a p urality of sub.

stations united by an electric circuit, a

branch circuit for associating a substation with said main electric circuit, step-by-step selective means at the-branch substation, devices, at-thecentral station for impress-. selective impulses on said electric cir- 1n cuit, means interposed between said electric circuit and said branch circuit to transfer said impulses to said branch' circuit to selectively actuate said step-by-step means, and means between said electric circuit and said branch circuit to establish telephonic continuity therebetween.

2. A selective signaling system comprising a central station and a plurality of su stations united by an electric circuit,

a branch circuit for associating a substation;

.with said main electric circuit, step-by-step selective means at the branch substation,

devices at the central station for impressm selective impulses on said electric cir-- cuit, meaneinterposed between said electric circuit and said branch circuitto transfer said impulses to said branchcircuit to selectively actuate said step-.by-s. tep means,

' substations, and means between said electrictelephones at said central'station and said circuit and said branch circuit to establish telephonic continuity therebetween. 4. A selective signaling 5 stem comprisinga central station and a p urality of sub stations united by an electric c1rcuit, a branch circuit for associating a substation with said main electric circuit, step-by-ste'p selective means at the'branch substation, devices at the central station for impressing selective impulses on said electric c1rcuit,-a relay inter osed between s'aid electric circuit andsald branch circuit to transfer said branch circuit for associatinga substation with said main electric circuit, step-by-step selective means at the branch substation, devices at the central station for impressing.

selective impulses on said electric circuit, and means interposed between said electric circuit and said branch circuit to'transfer said impulses to' said branch circuit to selectively actuate said stepby-'step means.

6.- A selective signaling s stem comprising a central station and a p urality of substations united by an electric clrcuit, a

branch circuit for associating a'substation.

with said main electric circuit, step -by-step selective, means at the branch substation,

devices at the central station for impressing selective impulses on said electric circuit, means interposed between said electric circuit and said branch circuit to transfer said impulses to said branch circuit to selectively actuate said step-by-step means, telephones at said central station and said substations, and a repeating coil between said electric circuit and said branch circuit to establish telephonic continuity therebetween.

7. A selective signaling system comprising a central station and a plurality of substations unite by an electric clrcuit, a branch circuit for associat' a substation with said 'main'electric circuit, step-by-step selective means at the branch substation, devicesat the central station for impressing selective impulses'on said electric circuit, a relay inter osedbetween said electric circuitand said branch circuit to transfer said' impulses to said branch circuit to selectively actuate said step-by-step selective means, telephones at said central station and substations, and a" repeatin coil between said selective circuit and sai branch circuit to establish telephonic continuity therebetween. 1

8. A selective signaling s stem compris- 'ing a central station and a pl stations united by ane'lectric circuit, a' branch circuit'for associating urality of suba substation with said'main electric circuit, step-by-step' selective means at the branch substation, devices at the central station for impressing selective impulses on said electric circuit, a.

' substations, a. repeating relay interposed between said electric circuit and said branch circuit to transfer said impulses to said branch circuit to selectively actuate said. step-by-step selective means, telephones at said central station'and saidcoil between said selective circuit and said branch circuit to establish telephonic continuity therebetween,

and condensers associated. with the circuit leading to said repeating coil.

In witness whereof, I hereunto subscribe my name this 10th day of July, A. D. 1909.

I HARRY O. RUGH;

W itnesses;

JEAN- ELnIo'rr, O. M. WENNICH. 

